787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Flight Management, Navigation -
FMC Descent and Approach
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 11.43.3
The page title displays active (ACT) or modified (MOD) descent. Usually, the title
displays ECON for economy descent. Fixed speed descents modify the title.
The page title displays the type of descent:
• ECON – speed based on a cost index
• LIM SPD – speed based on airplane configuration limiting speed
• MCP SPD – MCP speed intervention is selected
• XXXKT – fixed CAS descent speed profile
• M.XXX – fixed Mach descent speed profile
• END OF DES – E/D AT waypoint reached if not followed by a climb
segment
Fixed descent speeds are for:
• a flight crew entered selected speed (SEL SPD)
• a speed transition
• a speed restriction associated with an altitude constraint
• waypoint speed constraints
Displays the end of descent altitude and waypoint.
The end of descent point is a waypoint in the descent phase with the lowest
altitude constraint.
The altitude displays in magenta when altitude becomes the FMC altitude target.
Page is blank if no E/D point exists.
Both CAS and Mach values display.
ECON SPD –
• economy speed based on cost index
• displays CAS and Mach values
SEL SPD –
• displays when flight crew enters speed
• displays constraint speed on transitioning into a selected speed segment
(waypoint speed constraint, SPD RESTR, or SPD TRANS)
• valid entries are CAS or Mach
The FMC commanded speed is magenta. Initially, Mach is magenta and CAS is
white. Below CAS/Mach transition altitude, CAS is magenta and Mach is white.
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Page Title
2
End Of Descent At (E/D AT)
3
Economy Speed (ECON SPD), Selected Speed (SEL SPD)
October 31, 2007
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